File Systems - IO from Scratch - Part 10

After adding storage support (in the form of SD cards), implementing a file system is the next logical step. In this video I give an overview of what they are, the specific filesystem I’ve chose to implement and a tour around the code I’ve been developing.

Developing a system like this requires a large amount of programming. I’m still working out the various ways I can show that. It wouldn’t be practical to edit a video showing the actually coding of this library so I’ve chose to demo the code by talking about the functions while I demonstrate them.

0:00 Introduction 0:48 File systems? 2:17 Which to use? 4:13 Fat16 Structure 5:48 File Allocation Table 7:41 Finding a volume 10:57 Boot Sector 13:22 Root Directory Data 15:19 Working Data, a cache 16:35 Directory Listing 18:55 Reading the FAT 22:26 Cluster Chains 26:05 Directory Recurse 27:28 Finding a file 28:26 Loading a file 30:36 Snek.com! 31:08 Outro

The technical links I reference in the video: https://formats.kaitai.io/mbr_partition_table/ https://en.wikipedia.org/wiki/File_Allocation_Table http://www.maverick-os.dk/FileSystemFormats/FAT16_FileSystem.html https://www.win.tue.nl/~aeb/linux/fs/fat/fat-1.html ... https://www.youtube.com/watch?v=SMBLwLIPpk8